| 1. | Characteristics of electro - optical x - ray image intensifiers for medical electrical equipment - determination of the luminance distribution and luminance non - uniformity
医用电气设备用电光x射线图像增强器特性.亮度分布和不一致性测定 |
| 2. | Medical electrical equipment - characteristics of electro - optical x - ray image intensifiers - part 3 : determination of the luminance distribution and luminance non - uniformity
医用电气设备.光电x射线影像增强器特性.第3部分:亮度分布和非均匀性测定 |
| 3. | To array ccd , computing the interference pattern excursion based on image processing , fourier transform and interference pattern intensity distribution are discussed
对于面阵ccd ，提出了基于图像处理、傅里叶变换以及条纹亮度分布计算条纹漂移量三种方法。 |
| 4. | An electron beam distribution automatic measurement system which captures image by ccd is designed to make the measurement faster , more precise and more efficient
设计制造了基于ccd采集图像的基础上的电子束亮度分布自动测试系统，实现了快速高精度的测量。 |
| 5. | Condition of vision in which there is discomfort or a reduction in the ability to see significant objects , or both , due to an unsuitable distribution or range of luminance or to extreme contrasts in space or time
由于亮度分布或范围的不合理分配或空间或时间上的强烈反差，而引起的不舒适视觉条件或观察能力的下降。 |
| 6. | To linear ccd , the posit ion of fringe is according to the intensity distribution of interference pattern , too . local fitting method is applied when position the fringe because of the high noise
对于线阵ccd ，同样是根据条纹自身亮度分布的特点对条纹进行定位，由于噪声较大，在对条纹进行定位时，采取了对条纹数据局部拟合的方法。 |
| 7. | But those were not enough - cause there are many factors that affect daylight , we cannot grasped the rule of daylight change . so most countries in the world , made the outdoor horizontal illuminance of overcast sky as the daylighting standard
为解决这些问题，各国的学者通过对本国光气候的长期观测得到了晴天天空、阴天天空和中间天空的天空亮度分布，并希望以此为依据，制定各个不同国家和地区的采光标准和天然采光的计算方法。 |
| 8. | This kind of standard wastes too much sunlight energy , so to change the situation , many people began to study the intermediate sky . now , they had drawn some conclusions . in our country , this kind of research did not go for a long time , and we lack of large amount of data
摘要目前，由于对我国的光气候研究时间较短，且缺乏大量、准确的观测数据，无法得到准确而全面的晴天、阴天以及中间天空的天空亮度分布，因而仍以阴天时的室外水平照度作为天然采光的标准。 |
| 9. | The binarization , dilation and thinning of interference pattern are stressed . computing the excursion of interference pattern based on fourier transform is based on the fact that interference pattern has different phase at different position , the signal extraction of interference pattern and phase unwrapping algorithm are mainly discussed . computing the excursion of the interference pattern based on the interference pattern intensity distribution is to position the fringe according to the intensity distribution characteristic
基于图像处理计算干涉条纹漂移量，目的是抽取干涉条纹的骨架，通过条纹骨架的定位实现对条纹的定位，重点讨论了条纹图像的二值化、膨胀和细化；基于傅里叶变换计算干涉条纹的漂移量，是基于条纹不同位置处的相位不同这一事实，重点讨论了干涉条纹信号的提取和干涉条纹相位去包裹算法；基于条纹亮度分布计算条纹漂移量，是根据条纹自身亮度分布的特点对条纹进行定位。 |
| 10. | Aberration of electronic lens made by electron gun and aberration of magnetic deflection system made by dy are comprehensively investigated , so is the shadow mask ' s effect on electron beam landing screen error . the conclusion can be get that , because the distribution of electron beam landing screen ( distribution of luminance ) is affected by many kinds of factors , it cannot get the correct function by calculation , and should be get by measurement instead
全面分析了cpt电子枪发射系统形成的电子透镜像差与磁偏转系统形成的偏转像差；分析了荫罩的自身厚度与位移对电子束着屏的影响，并由此得出结论，着屏电子束分布(即亮度分布)受着许多因素的影响，理论分析是半定量的，着屏电子束分布需要用精确的测量仪器来测量。 |
